Gender Fluid is a gender identity best described as a dynamic mix of boy and girl. A person who is Gender Fluid may always feel like a mix of the two traditional genders, but may feel more boy some days, and more girl other days.
Being Gender Fluid has nothing to do with which set of genitalia one has, nor their sexual orientation.

A genderfluid person is someone who fluctuates between more than one gender, or between having a gender and not having one. They do not stick to one gender, or lack thereof, for their entire life. It is not related to a person's genitalia, nor their sexual orientation.

Eri identified as a boy last week, a girl yesterday and is agender today. This makes them genderfluid.

An individual who is genderfluid experiences their sense of gender identity shift around the spectrum. They may feel like a boy one day, a girl another, or neutral, or everything at once, or nothing, or something different entirely. This is a completely normal gender identity; being genderfluid is not a mental illness. Gender has nothing do with genitals.

Being genderfluid can be hard, because there are days when I love my body, and days where I just wish it would disappear.

One day you wake up and you feel more femine or masculine. Commonly called "attention seekers" or that they "made up their gender" but no. Is a minority in the trans community along with gender queer and they get alot of hate for it.

(Female genitalia)Gender fluid: Hey guys, I just want to tell you that I am gender fluid! Please use they pronouns for me.
Person:lol, attention seeking fag! Look in your pants! That is your gender you fucking retard

Girls and Boys from the age of 12 - 25 who haven't fully matured yet. They crave attention and judgement. They've got no social lives other than a computer (the main issue here), which they will spend hours on. As they all have parent issues and weren't loved enough as a young child they think the best way to combat these issues would be to tell the world that they are not a male or female, despite the fact that their body and genetic make-up have already proved that they are one or the other. So, with no social life or loving family, the only way they can get noticed is to argue with people on the internet. However this 'Genderfluid' bullshit is only a phase, it will pass over when they realise its not going to get them anywhere in life and that no one actually cares. So to sum up : immature hipster cunts trying to be even more out of the mainstream circle by going against simple biology. if you have a penis, you are a bloke.. if you have a vagina, you are a lass. if you dont like it then get fucking surgery. stop trying to convince yourself that naming this stupid phase will change your genetic make-up. Grow up, no one likes a show off. shit yeah this is mean to be a definition, my bad.. if you dont get the point then look on tumblr, theres loads of these creeps on there.

Hey im genderfluid!
Oh is that so? well take your hipster bullshit else where.
you are either a bloke or a lass. grow the fuck up